Home / 1,538.68-2,124.24-1,015.62

Finding the Fourth Proportional to 1,538.68, 2,124.24 and 1,015.62

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Solution

The fourth proportional to 1,538.68, 2,124.24 and 1,015.62 is: 1,402.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.68 : 2,124.24 = 1,015.62 : x
  2. Step 2: Convert to fraction form
    1,538.68/2,124.24 = 1,015.62/x
  3. Step 3: Cross multiply
    1,538.68x = 2,124.24 × 1,015.62
  4. Step 4: Simplify right side
    1,538.68x = 2,157,420.63
  5. Step 5: Solve for x
    x = 2,157,420.63/1,538.68
  6. Step 6: Final answer
    x = 1,402.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.